Nez Perce County's 2026 population is estimated at 42,585, reflecting a -0.31% growth rate over the past year (World Population Review estimate based on U.S. Census Bureau data). Nez Perce County is the 11th largest county in Idaho. The 2010 population was 39,317 and has grown 8.31% since 2010.
Data after 2023 is projected based on recent change
Overall: 41.2 years
Female: 41.9 years
Male: 40.3 years
There are 33,634 adults, (8,998 of whom are seniors) in Nez Perce County.
Female: 21,417 (50.2%)
Male: 21,280 (49.8%)
The racial composition of Nez Perce County includes 87.73% White, 4.42% Native American, and smaller percentages for Asian, other race, Native Hawaiian or Pacific Islander, Black or African American and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| White | 37,457 | 87.73% |
| Two or more races | 2,425 | 5.68% |
| Native American | 1,889 | 4.42% |
| Asian | 368 | 0.86% |
| Other race | 366 | 0.86% |
| Native Hawaiian or Pacific Islander | 109 | 0.26% |
| Black or African American | 83 | 0.19% |
Nez Perce County 's average per capita income is $49,732. Household income levels show a median of $72,599. The poverty rate stands at 12.25%.
| Name | Median ↓ | Mean |
|---|---|---|
| Married Families | $100,980 | $116,753 |
| Families | $92,142 | $107,802 |
| Households | $72,599 | $91,379 |
| Non Families | $39,742 | $56,270 |
Average Income
Median Household Income
Poverty Rate
